| 主权项 |
1. A backlight module, comprising:
a light guide plate having a light incident side; a light coupling unit comprising a plurality of light coupling devices arranged in a side-by-side manner, each light coupling device having a first side and a second side, the first and second sides being opposite to each other, the second side being adjacent to the light incident side, each light coupling device being configured to have a thickness gradually decreasing from the first side toward the second side wherein each light coupling device further has a first joint part, the light guide plate further has a plurality of second joint parts connected to the light incident side, each first joint part comprises a joint groove extending along a first direction and each second joint part comprises a joint pillar extending along the first direction, the joint pillars are respectively inserted with the joint grooves for limiting a movement of the light coupling unit along a second direction parallel to a long edge direction of the second side, and the first direction intersects the second direction; and a plurality of light emitting devices disposed beside the first sides of the light coupling devices. |
